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14. From marks made down the edges, redraw the bias line
where the cover was removed. Then cut the top ply along
this line (Fig 5-9).
Fig 5-9
15. Prod the top ply loose along the bias line where the cut
was just made. Be very careful as you can easily damage
the fabric (Fig. 5-10).
Fig. 5-10
16. Turn the belt end over and mark the cover strip for
removal (Fig. 5-11). Cut and remove this cover strip.
17.
Turn the belt end back down and remove the cover and
top ply (Fig. 5-12). This is a very difficult pull. If a winch
or equivalent is not available, use a come-along and very
carefully cut the inside gum with a ply knife.
NOTE: DO NOT NICK THE FABRIC. Damage to the underneath ply will
cause premature splice failure.
Fig. 5-12
18. The other end of the belt is torn down from the opposite
side using the same system. Note the bias length on this
end must be measured from the opposite edge that was
used on the first end.
19. Roughen up the 45° cover skives on top and pulley sides
as well as an inch or so of cover surface adjacent to the
skives. Blow or brush away all rubber dust.
6.
Measure the splice length, plus 1 in. (25mm) trim starting
from the end of the belt (Fig. 5-5).
Fig. 5-5: End of belt
7.
Measure off the bias length and draw the bias line to
the end of the master line on the opposite edge (Fig. 5-6).
This line marks the location of the top ply cut after the
cover gum is removed.
Fig. 5-6: Marking the ply cuts down the edge of the belt.
8.
Extend the end of the bias line down over the belt edge.
9.
From the bias line measure toward the end of the belt
a distance equal to the total number of steps plus 1 in.
(25mm) trim for example:
A 2-ply fabric belt requiring 8 in. (203mm) steps would
equal 9 in. (230mm)
3 ply = 17 in. (430mm)
4 ply = 25 in. (635mm), etc. Mark the cut-off line, which is
parallel to the bias line (Fig. 5-5).
10. Lay out the cover strip for removal. Draw one line parallel
to and approximately 1/2 in. (13mm) from the bias line and
on the splice side. Draw a second line on the belt side of
the bias line but at a distance of 2 in. (50mm) (Fig 5-7).
Bias line
Bias
Step length
Step length
Plus 1 in. (25mm) trim
Total splice length plus 1 in. (25mm) trim
Cut-off
line
Fig. 5-7: Showing master line and top cover insert cut lines. Note position of
hand for cutting 45° bevels.
11.
Cut along the two covers cut lines just made. The line on
the belt side of the bias line should be skived per Fig. 5-7.
The other cut may be vertical. Do not cut too deep. If you
feel fabric, you have damaged the belt.
12. Cut off the belt at the cutoff line (Fig. 5-5).
13. Remove cover strip. Note the one skived cut and one
vertical cut in the cover (Fig. 5-8).
Fig. 5-8: Removing insert strip, note position of master line, and angle cut.
Master Line
Cover Strip
First Ply Cut and
Bias Line
Fig. 5-11
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Conveyor Belt
Fabric Splice Manual
Conveyor Belt
Fabric Splice Manual